Exhaust silencer



Dec. 18 1923.

D. FARRAND EXHAUST SILENGER Original Filed May 12.v 1920 mvemoa:

DU HYIY Farr-ar@l Md, ATTORNEYS lencer.

Patented Dec. 18, 1923.

DUDLEY FARRAND, F NEWARK, NEW JERSEY.

EXHAUST SILENCER.

Application filed May 12, 1920, Serial No. 380,732. Renewed September 14, 1923.

i skilled in the art to which it appertains to nahe and use the same, reference being had to the accompanying drawings, and to characters of reference marked thereon, which form a part ot this speciiication.

This invention relates, generally, to imroveroents in centrifugal machines or aparatus; and, 'the present invention has refc ence, more particularly, to a novel centrifugal exhauster which is especially adapted for application to the exhaust-pipe or" a steam-engine, or the like, and is adapted to he driven. `from the exhausting medium, the device thereby acting as an exhaust-si- The present invention, therefore, has lor its principal object to provide a novel and s irnply constructed apparatus oit the general character hereinafter more yfully set forth, which is readily adapted for attachment to the exhaust pipe of a steam engine, or the "e, the apparatus being provided with an impeller "ziich is driven from the escaping exhaust, and by its action causes such exhausting medium. to perfomn a certain amount oit worlr, whereby its force is expended and the usual noise of the escaping medium is silenced.

"W ith various objects of the present invention in view, the said invention consists, primarily, in the novel exhaust silencer hereinafter more fully 'set forth; and, the said invention consists, furthermore, in the novel arrangements and combinations of the several parts of the device, all of which will be more fully described in the following' speciilcation, and then finally embodied in the clauses of the claims which are appended to and which -form an essential part of 'the said specification.

rll`he invention is illustrated in the accompanying drawings, in which:-

and Figure 3 is a top or plan view 'the exhaust silencer.

Figure 4 is a side view of an impoller used with the device or apparatus; and Figure 5 is a transverse vertical sectional representation of the same. Q

Similar characters oi reference are employed in said above described views, to indicate corresponding parts.

Referring now to the several figures of the drawings, the reference-character 1 indicates one form of exhaust silencer, made according to and embodying the principles of the present invention, the same comprising a pair oir chamhered half-sections or casingniembers, Vas 2 and 3, formed with semi-tubolar outlet-portions, as 4; and 5. As shown, the respective half-sections or casing-inembers 2 and 3, and the respective outlet-portions land 5, are respectively hanged, as at 6 and 7, said ianges being placed opposite each other, as represented in Figures 2 and 3 or the drawings, and being provided with registering holes for the reception oi bolts 8 and'nuts 9 on said bolts, whereby the said members are secured in an assembled relation, and whereby a main impeller-shell or casing of the general coniiguration shown in the drawings is provided. As illustrated, the exhaust or discharge end provided by the assembled outlet-portions Il and 5, may also be provided with laterally extending anges 10 and 11, respectively, provided with bolt-receiving holes 12, for the attachment to the annular ange thus provided` of a conveyor pipe or tube, as will be evident. As indicated in dotted outline in said Figure 1 of the drawings, the half-sections or casing-members 2 and. S are, respectively, formed in their sides with opposit-ely placed inlet-ports 13, which are preferably of an elliptical or elongated shape, but which may be of any other conformation, suitable for the purposes of the present invention. The said inlet-ports, as represented, are located opposite each other, at points above a plane passed horizontally through the centers of the said half-sections or casing-members 2 and 3, and connected with said half-sections or casing-members 2 and 3, and enclosing the respective inlet-ports 13, are a pair of rearwardly extending and tubular conveyorducts or elements, as 14 and 15, which are preferably annularly flanged, as at 16 and 17, for the attachment thereto of the flanged members 19 and 20 of a Y-shaped or other .site sides oi said Wait-meinten and con t@ which are ro suitaioiy mounted suitahijg/v shaped pipe-{itting or eieinen" 2i, the inietportion ont which may aso Vhe iianged?V as 22, ier attachment oi said-titin a suitaioie manner to the enhaustn pipe oi a steamenjfgine9 or any other noisenected with the huh-portion 29, are a number radiaiiy disposed impeiier-hiades 32, aii so as to provide a number of'med iumreceiving and carri/ing1 pockets9 ne which the enhaustduediurn 'zdnaiiy exerts its power, is expelled into the expand ing outiet-duct, from which it is carried and A forced into the discharging or exhausting outiet oif the complete exhaustsiiencer, as

3@ Wiii ice cieariyl understood. The fimpeiier,

as Willi he seen from an inspection oi said Figure 4i? may aisohe provided "with an arrangement et short ioiades, as 339 which extend on oppositesides oi:- the Waihmeinhei 3i, from the peripherai edge ci said Waitmemher the respective pockets iorined i3-ir the said ,Waii-memheri and the respectrue imiieiienhiades 32 Having .in the foregoing, described one s generai construction of eaifiaust-siiencer7 and the generai arrangements and combinations of the Various parts thereof, aii made accordl ing to embodying the principies oi the present invention it Wiii he cieari f evident 9 d from an inspection of the several iigures o' the drewsfings9 just in what manner the apparatus or dei/ice operatesg when an exhausted medium, such exhaust' steam, is admitted through the inist:pants7 on opposite do sides into the interior of the apparatus and against the impeiier rotatably mounted i'ginnein.7

Wasn this action takes piace the exhausting medium performs its iinai "Work against the vanes or hiades oi the impeiierj thus ro tating the samea and at the same time breaking up the exhausted medium in such a manner that the noise usuaiiy accompanying the same is siienced and the medium is iinaiiy i discharged at the discharge-end oit the appalratus, either-inte the air'or into a pipe or other conveyor., Without noise.

@i course -c aware that seine changes' may he nii-ade in the generati arrangements and combinations. the severa-i of' the D f aannam apparatus without departing inem the scope conveyor-ducts connected with said casing? i each conveyor-ductl being in communication with an inist-portrv and means connected with the inietopenings ,eig said conveyorducts tor admission of exhausted medium into said ccnveyonducts for said impeiien 2.. in exhaust siiencer comprisinga'cham tiered casing1 hai/'ing adischarge-opening, an

impeiienrotatabiy.mounted in said casing,

inist-ports on opposite sides o'i said casing, conveyorducts connected with said casing, each conveyor-duct being in communication with an inietport, and means'connected with the iniet-openings of said contienen-ducts :tor admission off an exhausted medium into said conveyor-ducts ior actuatingsaid inipeiieif7 said impeiier comprising a hub-portion mounted upon the iinpeiier-shait, a centraiiy disposed annuiar nati-nember extending,l *verticaiiy iro-m said huh-portion, and impeiier Vanes extending' ia/teraiiy from said Waiimeinhen 3., iin exhaust siiencer comprising a chamioenedi-casingw having discharge-'opening2 an impeiier rotatahiy mounted in said casing, inietp'orts on opposite sides ot said casing, conveyor-ducts connect/ed 'with said casing9 each conveyed"-ductbeing1 in communication with an inist-port, and a Y -shaped tuhuiar iniet tintura connected with the inietepenings oiisaid confyeyor-ducts for achnission ci an exhaust medium into said conveyor ducts for actuating1 said impeiien d.' inenhaust siiencer comprising a cham- 'hered-casingjvM having a discharge-opening, an impeiier rotatahiy mounted. in said casing, inlet-ports on opposite sides ci2 said casing,

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ima

conve or-ducts `connected with said casin each conveyor-duct heing in communication with an inist-port and a ii-shaped tuhuiar inlet iinture connected with the inist-openings oir said conveyor-ducts tor admission oi an exhaust medium into said conveyor ducts for actuating said impeiier9 said impeiier comprising` a huh-portion mounted upon the ifmoeiier-si'oait7 a centraiiy disposed annular wail-member extending Verticaiijy from said huh-portion, and impeiier vanos extending 'iateraiiy :trom said nadmemher.

zor

5. The herein-described exhaust silencer comprising an impeller-casing consisting of a pair of chambered half-sections and correspondingly shaped semi-tubular outlet-portions, means for securing said half-sections and outlet-portions together to provide said impeller-casing, each halfsection being provided With a bearing-portion and an inlet-port, a conveyor-duct connected with each half-section, each conveyor-duct being im communication With an inlet-port, an impeller-shaft rotatably mounted in said bearingportions, an impeller mounted upon said shaft, and means connected with the inletopenings of said conveyor-ducts for admission of an exhaust medium into said conveyor-ducts for actuatin said impeller.

6. The herein-described exhaust silencer comprising an impeller-casing consisting. of a pair of chambered half-sections and correspondingly shaped semi-tubular outlet-portions, means for securing said half-sections and outlet-portions together to provide said impeller-casing, each half-section being provided with a bearing-portion and an inlet-port, a conveyor-duct connected with each half-section, each conveyor-duct being in communication with an inlet-port, an impeller-shaft rotatably mounted in said bearing-v portions, an impeller mounted upon said shaft, and means connected with the inletopenings ofY said conveyor-ducts for admission of an exhaust medium into said conveyor-ducts for actuating said impeller, said impeller, comprising a hub-portion mounted upon the impeller-shaft, a centrally disposed annular lwall-member extending vertically from said hub-portion, and impeller vanes extendinglaterally from said Wall-member,

7. The herein-described exhaust silencer comprising an impeller-casing consisting of a pair of chambered half-sections and correspondingly shaped semi-tubular outlet-portions, means for securing said half-sections and outlet-portions together to provide said impeller-casing, each half-section being provided with a bearing-portion and an inletport, a conveyor-duct connected With each half-section, each conveyor-duct ;being in communication with an inlet-port, an impeller-shaft rotatably mounted in said bearing portions, an impeller mounted upon said shaft, .and a Y shaped tubular inlet fixture connected with the inlet-openings of said conveyor-ducts for admission of an exhaust medium into said conveyor ducts for actuating said impeller.

8. The herein-described exhaust silencer comprising an impeller-casing consisting of a pair of chambered half-sections and correspondingly shaped semi-tubular outlet-portions, means for securing said half-sections and outlet-portions together to provide said impeller-casing, each half-section being provided With abearing-portion and an inletport, a conveyor-duct connected With each half-section, each conveyor-duct being in communication with an inlet-port, an impeller-shaft rotatably mounted in said bearingportions, an impeller mounted upon said shaft, anda Y-shaped tubular inlet fixture connected With the inlet-openings of said conveyor-ducts for admission of an exhaust medium into said conveyor ducts for actuating said impeller, said impeller comprising a hub-portion mounted upon the impeller-shaft, a centrally disposed annular Wall-member extending vertically from -said hub-portion, and impeller vanes extending laterally from said Wall-member.

9. An exhaust silencer comprising a chambered impeller casing having oppositely directed inlet openings, and a discharge opening, animpeller rotatably mounted in said casing, and means connected with the inlet openings of said casing for conveying an exhaustomedium' into said casing lfor actuating said impeller, said impeller comprising ahub-portion mounted upon the impellershaft, a centrally disposed annular Wallmember extendingvertically from said hubportion.

10. An exhaust silencer comprising a chambered impeller casing having oppositely directed inlet openings, and .a discharge opening, an impeller rotatably mounted in said casing, a means connected ywith the kinlet openings of said casing for conveying an exhaust medium. into said casing for actuating said impeller, said impeller comprising a 'hub-portion mounted upon the impeller-shaft, a centrally disposed annular,

wall-member extending vertically from said hub-portion, and impeller vanes extending laterally from said wall-member.

, 11. An exhaust silencer comprising a chambered casing havin a discharge opening, an impeller rotatab y mounted in said casing, said casing being provided with an elongated inlet-port, a tubular conveyorduct connected With said casing and in communication with said inlet-port, and means connected with the inlet opening of said conveyor-duct for admission of an exhaustmedium into said conveyor-duct for actuating said impeller, said impeller compris-- ing a hub-portion mounted upon the imd ller-shaft, a centrally disposed annular wall-member extending vertically from said hub-portion, and impeller vanes extending laterally from said Wall-member.

In testimony that I claim the invention set forth above 'I have hereunto set my hand this 6th day of Ma 1920.

SUDLEY FARRAND. Witnesses: FRED C. FRAnN'rzEL, BARBARA W. SUTTERLIN. 

